How to use Exposures in a sentence
Good rock exposures were found containing coal and fossils.
He has, he adds, tested gold made by alchemists, and found that it will not withstand six or seven exposures to fire.
The Umgeni quarries, where the rock is used for road-metal, furnish the best exposures.
It is possible to learn from them more regarding the social and political condition of the period than perhaps from any other source, for they abound, not only in exposures of religious abuses, and of the prevailing corruptions of society, but in references to many varieties of social injustice and unwise customs, in racy sketches of character, and in vivid pictures of special features of the time, occasionally illustrated by interesting incidents in his own life.
Where accurate differential observations or photographs involving other than instantaneous exposures have to be made, the additional condition is required that the optical axis of the telescope shall accurately and automatically follow the object under observation in spite of the apparent diurnal motion of the heavens, or in some cases even of the apparent motion of the object relative to neighbouring fixed stars.Advertisement
This is an unquestionable drawback when long exposures near the meridian are required.
There are farther inconveniences in the use of such a telescope, viz., that the image undergoes a diurnal rotation about the axis of the horizontal telescope, so that, unless the sensitive plate is also rotated by clockwork, it is impossible to obtain sharp photographs with any but instantaneous exposures.
If three plates (or three sets of exposures on one plate) are taken at intervals of six months, when the stars in the region have their maximum parallactic displacements, the first and third plates serve to eliminate the proper motion of the star, and the detection of a parallax is easy.
Some of the best-known exposures are in the ranges which rise above the western plains, such as the Rankin Range on the Darling and the Kokopara Range to the north of the Murrumbidgee.
Regarding now the outcrops of bed-rock, there are exposures of Algonkian (doubtful, and at most a mere patch on Pilot Knob), Archean, Cambrian, Ordovician, Silurian, Devonian, sub-Carboniferous and Carboniferous.Advertisement
This significant but evanescent phenomenon, which represents the direct emissions of a low-lying solar envelope, was photographed by William Shackleton on the occasion of an eclipse in Novaya Zemlya on the 9th of August 1896; and it has since been abundantly registered by exposures made during the obscurations of 1898, 1900, 1901 and 1905.
Conversely, vegetarians may have lower dietary exposures to chemicals which are more prevalent in meat and fish (e.g. arsenic ).
Used with the camera on a tripod the winder allows repeated exposures without disturbing the camera on a tripod the winder allows repeated exposures without disturbing the camera position.
Sediment exposures generally show well-sorted and interbedded sand and gravel facies typical of a glaciolacustrine depositional environment.
These effects are made worse by exposures greater than one hour and may lead to airway inflammation which may produce short term breathing difficulties.Advertisement
Nonetheless, the majority of pregnant women with such exposures did not miscarry, the reviewers emphasized.
Many diseases, including myositis, are likely to develop as a result of the combination of genes and environmental exposures.
This small cutting has good exposures of inferior oolite.
In these exposures the atmospheric phase perturbations are compensating for the errors in the figure of the telescope mirror.
The other possible circumstances where high exposures may occur is in the use of phenolic resins in foundries.Advertisement
Effects produced following intentional exposures are usually restricted to readily reversible, mild surrogate endpoints of the adverse effect of concern.
Here, although exposures are very poor, the Silurian rocks comprise shales, sandstones and limestones with a couple of beds of lava.
Dinah operated the still camera and took the time exposures.
This is one of the youngest horizons to yield trilobites at surface exposures in Britain.
This enabled the observer to make exposures of any desired length, and, through the cumulative action of light on extremely sensitive surfaces, to obtain permanent accurate pictures of celestial objects so faint as to be completely invisible to the eye, even when aided by the most powerful telescopes.Advertisement
The main problem with film is reciprocity failure on long exposures.
However, at elevated temperatures, long term exposures eventually result in the spallation of the protective coatings.
Exposures to sublethal concentrations of this gas may permanently damage the respiratory system.
The electronic viewfinder display could be used to determine the exposures.
The longer the exposures, the more batteries you will need.Advertisement
Use a tripod for longer exposures and increase the ISO setting.
The 1050 SW automatically focuses on faces and optimizes exposures for each.
Also, keep in mind that the moon won't be scurrying across the sky during your shoot, so longer exposures (more than 1/15) will suffice.
Blurriness, color casts, faded hues, botched exposures and light flares are all imperfect aspects of images captured by instant film cameras.
Optics offer Lens Peripheral Illumination Correction, which automatically compensates to prevent vignetting and lens shading, resulting in evenly balanced exposures.Advertisement
Other exposure options include low light shooting and long exposures with minimal noise.
With older cameras, photographers had to deal with something called "reciprocity failure" associated with longer exposures.
Fixed pattern noise is the main drawback of using a digital camera with increasingly long exposures.
It is essential to use a tripod and self-timer or remote control device to eliminate the camera shake inherent with long exposures.
Set the ISO low; preferably at ISO 100 with the widest aperture your camera can handle for long exposures.Advertisement
Get in the habit of bracketing exposures by one stop and compare the different outcomes.
Most of the introduced kinds are of free growth in warm soil, and they flower most freely in sunny exposures.
According to the Environmental Working Group (EWG), people can lower pesticide exposures by a whopping 90 percent.
The presence or absence of accompanying symptoms, a person's medical history, and information about what he or she may have ingested, any recent trips taken, or possible exposures to illness all help the physician make a diagnosis.
While the infection rate may seem relatively low, even an attack rate of less than 0.5 percent in such a large number of exposures results in many infected individuals.Advertisement
Fading therapy is a type of desensitization that creates a series of events or exposures that starts with a situation that is comfortable for the child, such as being alone in the classroom with a parent and playing a board game.
It is also important to be aware of the medications, chemicals, and other exposures to avoid due to the theoretical risk they pose of precipitating a severe anemia event.
However, an anaphylactoid reaction can occur on initial exposure to an allergen as well as on subsequent exposures, since no sensitization is required.
The risk of anaphylaxis sometimes diminishes over time if there are no repeated exposures or reactions.
A homeopath treating a patient with contact dermatitis will do a thorough investigation of the individual's history and exposures before prescribing a remedy.Advertisement
Most rabies exposures are from bites by unvaccinated dogs.
Primary or congenital immunodeficiencies are genetic and are not preventable by avoidance of exposures or by dietary measures.
Environmental exposures that can increase the chance for a baby to be affected by PDA include fetal exposure to rubella before birth, preterm delivery, and birth at a high altitude location.
These children tended to withdraw from new stimuli and had difficulty adapting to change, but their reactions were of mild intensity and gradually became either neutral or positive with repeated exposures to the new event or person.
Protect fetal and infant health by minimizing exposures to potentially harmful medications.
Other possible causes include a genetic association or possible exposures to chemicals.
It is a eczema that is caused by exposures at work.
The superintendent of the Ninth Census, 1870, presented a computation 01 the effects of this causefirst, through direct losses, by wounds or disease, either in actual service of the army or navy, or in a brief term following discharge; secondly, through the retardation of the rate of increase in the colored element, due to the privations, exposures and excesses attendant upon emancipation; thirdly, through the check given to immigration by the existence of war, the fear of conscription, and the apprehension abroad of results prejudicial to the national welfare.
Abney as far as 20,000 A, but long exposures are necessary.
Sir William Huggins repeated the experiment on Winnecke's comet in 1868, Progress only with long exposures could autographic im ?'
The Slieve Bloom Mountains are thus formed of a dome of Old Red Sandstone folded on a core of unconformable Silurian strata; while in several cases the domes are worn through, leaving rings of Old Red Sandstone hills, scarping inwards towards broad exposures of Silurian shales.